Terminal station

ABSTRACT

A REMOTE TERMINAL STATION CONNECTED BY COMMUNICATION CHANNELS TO A CENTRAL PROCESSOR FOR THE COMMUNICATION OF ALPHA AND NUMERIC INFORMATION. THE TERMINAL STATION IS CAPABLE OF BEING OPERATED IN ANY ONE OF THREE INDEPENDENT MODES. THE FIRST MODE IS ON LINE WITH THE CENTRAL PROCESSOR WITH AN OPERATOR ENTERING DATA INTO THE SYSTEM AT THE TERMINAL STATION. BY PROPER SELECTION OF OPERATIONAL KEYS, THE CODE TRANSMITTED BY THE TERMINAL STATION IS EITHER ASCII OR HAMMING. THE SECOND MODE IS ON LINE UNATTENDED WHEREIN THE TERMINAL STATION &#34;ECHOES&#34; BACK TO THE CENTRAL PROCESSOR ALL INFORMATION RECEIVED BY IT. THE THIRD MODE IS AN OFF-LINE MODE OF OPERATION WHEREIN AN OPERATOR CONTROL STHE INPUT AND OUTPUT OF THE STATION. A RECIRCULATING REGISTER OPERATING ON A TIME SHARING BASIS IS USED FOR SYNCHRONIZING THE OPERATING SPEED OF THE TERMINAL STATION WITH THE SPEED OF TRANSMISSION OVER THE COMMUNICATION LINES.

United States Patent [72] Inventors John H. Pedersen Detroit; Michael M.Mllnler, Jr., Livonia; Charles B. flebeler, Pennington; lloy Ying Chang,Westland, Mich. [2| Appl. No. 771.461 [22] Filed Oct. 29,1968 [45]Patented June 28, 1971 [73] Assignee Burroughs Corporation,

Detroit, Mich.

[541 TERMINAL STATION 6 Claims. 47 Drawing Figs.

[52] U.S. Cl 340/1725 [5|] Int. Cl G06! 3/00, H041 7/00 [50) FieldSearch 340/172.5; 235/157 (56] References Cited UNITED STATES PATENTS3,245,038 4/1966 Stafford et al. 340/172.5X 3,300,763 I 1/1967 Hoehmann340/1725 3,328,772 6/1967 Oeters 340/1725 3,332,068 7/1967 McLaughlin etal. 340/1725 CENTRAL ATA 3,362,015 1/1968 Mackie etal. 340/172.5 33680282/1968 Windels et al 340/l72.5 3,402,397 9/1968 McDonald 340/17253,434,117 3/1969 Gibson 340/1725 Primary Examiner-Paul .l. HenonAssistant Examiner-R. F. Chapuran Attorneys-Kenneth L. Miller andWallace P. Lamb ABSTRACT: A remote terminal station connected bycommunication channels to a central processor for the communication ofalpha and numeric information. The terminal station is capable of beingoperated in any one of three independent modes. The first mode is online with the central processor with an operator entering data into thesystem at the terminal station. By proper selection of operational keys,the code transmitted by the terminal station is either ASCII or Hamming.The second mode is on line unattended wherein the terminal stationechoes" back to the central processor all information received by it.The third mode is an off-line mode of operation wherein an operatorcontrols the input and output of the station. A recirculating registeroperating on a time sharing basis is used for synchronizing theoperating speed of the terminal station with the speed of transmissionover the communication lines.

CENTRAL MODEM NO I.

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PATENTED NIN28IR 8588.884

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F T TERMINAL TERMINAL L TERMINAL STATION sTATIDN sTATIoN ND.2-I. ND.2-2.N0.2-n. INVENTORS. I04 JOHN H. PEDERsEN. cIIARLEs B. HEBEL ER.

MICHAEL M. MALMERJR. H0) YING CHANG.

MK. M

ATTORNEY.

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